1. Torque standards for screws in various parts of bicycles

Tightening the screws with the correct torque is very important for your safety!

If the tightening strength indicated in this manual conflicts with the information required by the part manufacturer, consult your bicycle dealer or the dealer for that part for correct screw torque requirements.

If you find a component whose locking strength is not indicated in this manual, please tighten it according to the locking strength indicated on the component itself or consult your bicycle dealer.

If you find that the locking strength indicated in this manual is different from the locking strength indicated on the actual component itself, please tighten according to the locking intensity indicated on the component itself or consult your bicycle dealer.

If the screws on the bicycle are locked too tightly, it may cause the screws or parts to deform or even break; if the screws are too loose, it may cause loosening, fatigue, or even the risk of falling off. Any incorrect locking strength may cause accidents.

Please get used to using a calibrated torque wrench to tighten the screws on your bicycle, and be sure to follow the torque wrench manufacturer's instructions for setting up and using your torque wrench correctly.

Note: The following torque values are for reference only. For actual operation, please refer to the torque values clearly marked on the parts. Otherwise, it may cause parts damage and personal injury.

Recommendation: To ensure your vehicle safety, if necessary, please try to have the vehicle adjusted and inspected by an authorized SOBATO dealer.

Commonly used screw torque standards

Seat post

Seat post clamp (M5 screw)................................................6N.m

Seat tube seat cushion clamp (M6 screw)................................................9N.m

Seat post clamp (M8 screw)................................................14N.m

crank

Shimano one-piece crank plastic side cover........................1.5N.m

Shimano one-piece crank left crank arm locking screw......................................12-14N.m

Split crankshaft center locking screw........................35-50N.m

Pan screws................................................12-16N.m

central axis

Square hole bottom bracket locking frame................................50-70N.m

Splined bottom bracket locking frame................................50-70N.m

Threaded bottom bracket locking frame with one-piece crank........................35-50N.m

handlebar set

Aluminum alloy stem and aluminum alloy handlebar locking position (4 nails)................................................5N.m

Aluminum alloy stem and aluminum alloy handlebar locking position (2 nails)................................................9N.m

Aluminum alloy stem and carbon fiber handlebar locking position (4 nails)................................................5N.m

Carbon fiber stem and carbon fiber handlebar locking position (4 nails)................................................5N.m

Carbon fiber stem and aluminum alloy handlebar locking position (4 nails)................................................5N.m

Aluminum alloy stem and front fork steerer locking position........................................6N.m

Locking position of carbon fiber stem and front fork steerer................................................6N.m

Locking screws for road bike brake shift lever and drop handlebar.............................................8N.m

Frame and seat tube locking

Round seat tube locking screw (M6 screw)................................................6N.m

Round seat tube locking screw (M5 screw)................................................5N.m

Frame built-in seat tube tightening plug (M5 screw)................................................6-8N.m

brake

Locking screws for mountain bike shift handles and handlebars........................................3N.m

Locking screws for mountain bike brake handles and handlebars........................................4-6N.m

MAGURA brake lever and handlebar locking screws........................3N.m

Locking screws for road bike brake shift lever and drop handlebar.............................................8N.m

Road rim brake pad locking screw........................5N.m

Locking screws between road rim brake caliper and front fork or frame......................................8N.m

Road rim brake direct-mount caliper and front fork or frame locking screws.............5-7N.m

Locking screws between the disc brake caliper and the front fork or frame (M6 screws)........................6-8N.m

The locking screw between the disc brake caliper and the front fork or frame (T25 screw)........................5N.m

wheelset

Hexagonal tube shaft locking torque........................................13-15N.m

Cassette flywheel locking ring........................40N.m

Central locking disc brake rotor locking ring........................40N.m

6-pin disc brake rotor locking screw........................3-4N.m

transmission

Clamp-type front derailleur and frame locking screws........................5N.m

Direct-mounted front derailleur and frame lifting lug locking screws................................................5-7N.m

Front derailleur lifting lugs and frame locking screws........................4-5N.m

Rear derailleur and tailhook locking screws........................8-10N.m

Front and rear derailleur fixed transmission cable locking screws........................................6-7N.m

other

Headset top cover locking screw........................5N.m

Bottle cage screw................................................4N.m

2. Reference table of names of bicycle parts

Head tubeHead tube

ChainChain

Fork

Chain stay

Brake disc

Rear derailleur

Spoke

Flywheel Cassett sprockets

Rim

Seat stay

Tire

Seat tube

Crank

Seat post

Crank set

Seat cushion Saddle

Bottom bracket

Top tube

Chainring

Down tube

3. Common basic installation standards

● Seat cushion

Proper saddle fit and adjustment is an important step for performance and comfort, if the saddle position is not comfortable enough for you, please consult your local bike dealer.

1. The seat cushion height can be adjusted up and down. Check for correct saddle height as shown in Figure 1. The rider sits normally on the seat, turns the crank so that the foot pedal is at the bottom (the farthest position from the seat), straightens the legs naturally and puts the heel exactly on the axis of the foot pedal. This is the seat height that is most suitable for you. Note that the extended part of the seat tube cannot exceed the safety line.

2. Front and rear adjustment of the seat cushion. You can adjust the seat cushion forward and backward to help you achieve a more comfortable riding position. To get the best saddle position for your body, talk to your bike dealer or a professional bike shop. Please note that when adjusting the seat cushion forward and backward, the clamp of the seat tube cannot exceed the safety line marked on the seat cushion guide rail.

3. Seat cushion angle adjustment. Most people prefer a horizontal saddle angle, but some prefer the front of the saddle to be tilted up or down. Your dealer or professional bicycle shop can help you adjust the appropriate saddle angle and can teach you how to adjust it. Different sport bikes may be suitable for different saddle angles.

● Handlebar set and control components

The handlebar set can be adjusted to different heights and angles, and the shift handle, brake handle or other control components on the handlebars can also be adjusted to different distances and angles.

1. The adjustment status of the handlebar set (stem, stem) varies from person to person. To suit your riding environment or physical condition, the dealer may recommend that you replace the handlebar or stem. This is normal. The adjustment of the handlebar set requires relatively professional skills. Please ask your dealer for help and do not try to adjust it yourself.

2. Adjustment of control components. The position and angle of the brake lever, shift lever, front fork controller, telescopic seat tube controller, rear shock absorber controller, etc. on the handlebar can be adjusted and changed. Based on personal usage habits and usage scenarios, it is recommended to ask your bicycle dealer or professional bicycle shop to make adjustments for you.

If you want to adjust it by yourself, please make sure that the tightening screw torque of the fixing clamp ring of each component complies with the screw torque standard indicated in this manual.

3. Adjustment of brake handle. Whether it is a mountain bike or a road bike, the grip distance of the brake handle can be adjusted, and some brake handles can also adjust the stroke of the handle. If you have smaller hands or find it difficult to squeeze the brakes, have your bike dealer or professional bike shop adjust the grip and travel of the handles. The smaller the palm, the more attention should be paid to adjusting the distance between the brake handle and the handlebar to ensure that the fingers can fully pull the brake handle and brake hard. If the palm needs to be moved to complete the braking action, it means that the distance between the brake handle and the handlebar is inappropriate, which may cause injury or even death to the rider in an emergency.

● Wheels

Generally, the wheels of sports bicycles are designed to be detachable to facilitate transportation and tire repair. Most detachable devices are divided into two different structures: quick-release type and thru-axle type. Therefore, check with your bike dealer in advance to determine how your wheels will be secured. It's important to know how your wheels are secured, how to tighten them correctly, and how to apply force to secure them. Please ask your dealer to teach you how to disassemble and install the wheels correctly. If your bicycle has separate wheel manufacturer's instructions, ask the dealer to give you the wheel instructions.

1. Adjustment of quick-release wheels. (Figure 2)

The wheel is fixed by applying pressure to the hooks on both sides of the front fork (or frame) of the nut opposite to it through the force of the quick release closing. When the quick release wrench is opened and the wheel is not moved, if the nut is turned clockwise, the pressure will increase; conversely, the pressure will decrease.

Note: Please keep the quick-release wrenches of the front and rear wheels to the left in the forward direction of your bicycle, and adjust the correctly closed wrench as close to parallel to the front or rear fork legs as possible.

warn! The nut must be locked and the quick-release wrench must be closed correctly. Never rely solely on the quick-release wrench to rotate and lock. If the quick-release wrench is loosened while riding, the wheel will come loose on its own and cause a major safety accident.

2. Adjustment of thru-axle wheel set. (Figure 3, 4)

The thru-axle structure is that the thru-axle rod passes through the front fork (or frame) and the hollow wheel hub axis in sequence, and enters the nut on the other side through the knob to lock and fix the wheel set. There are two methods of knobs on the barrel shaft: locking with an internal hexagonal wrench (Figure 3), and locking with a built-in rotating wrench (Figure 4). Use the Allen wrench tool or the wrench provided with the barrel shaft to lock the wheel set by turning it clockwise, and loosen it by turning it counterclockwise. This is the simpler and more straightforward way to secure the wheels. It should be noted that you must tighten your wheels according to the torque standards marked on the thru-axle rod or in this manual.

3. Install and remove the wheel set

NOTE: If your bike uses disc brakes, be careful when touching disc brake rotors and calipers! Disc brake rotors and calipers will become hot when used and can easily burn the skin. Disc brake rotors can be very sharp and can easily scratch your skin. The disc brake rotor must not be contaminated with additional dirt or oily substances, otherwise it will cause a loss of braking power.

①Remove the front wheel

If it is a rim brake type, please release the quick-release structure of the brake first (Figure 5, 6). This can increase the gap between the tire and the brake pad, and then remove the front wheel. If it is a disc brake, it is forbidden to squeeze the brake handle after removing the wheel set! As much as possible, install the corresponding type of pad gasket in the brake caliper (between the brake pad splints) to prevent the brake caliper piston from tightening or even loosening.

If your bicycle uses a quick-release wheel system, please open the quick-release wrench (Picture 2), move the quick-release wrench from the closed to the open position, and then loosen the nut until the wheel can be removed from the hook. During the process, you may have to tap the wheel tire down with the palm of your hand to disengage it from the front fork. If your bicycle uses a thru-axle wheel system, please loosen the thru-axle rod with the knob (Figure 3, 4), pull it out and remove the thru-axle rod, and the wheel set will be able to detach from the front fork smoothly.

②Install the front wheel

Note: If your bicycle is equipped with a front disc brake, please be careful not to damage the disc brake rotor, caliper, and brake pad splint by misalignment during installation. Please do not squeeze the brake lever until the disc brake rotor is installed in place.

If it is a quick-release wheel system, please open the quick-release wrench and ensure that the rim brake caliper is released, then place the wheel in the center of the front fork and ensure that the axle is fully engaged with the front hook. Finally, refer to the first item in the wheel category above "Adjustment of quick-release wheels" to correctly adjust and tighten the wheels.

If it is a thru-axle wheel system, you can directly place the wheel set in the center of the front fork so that the wheel axle is stuck into the front fork hook, and finally penetrate the thru-axle rod. Refer to the second item of the wheel set above "Adjustment of the thru-axle wheel set" to correctly adjust and tighten the wheel set. Afterwards, please close the rim brake brake release device and restore the distance between the brake pads and the rim. Rotate the wheel set to confirm that the wheel set is in the center of the frame when rotating, and check that the brake pads of the rim brake or disc brake are not in contact with the rim or disc brake rotor. Finally, try the brake operation to make sure the brake calipers are functioning properly.

③Remove the rear wheel

First operate the transmission system so that the chain is at the smallest sprocket of the flywheel. If it is a rim brake type, please first release the quick-release structure of the brake (Figure 5, 6). This can increase the gap between the tire and the brake pad, and then remove the rear wheel. If it is a disc brake, it is forbidden to squeeze the brake handle after removing the wheel set! As much as possible, install the corresponding type of pad gasket in the brake caliper (between the brake pad splints) to prevent the brake caliper piston from tightening or even loosening.

If your bicycle uses a quick-release wheel system, please open the quick-release wrench (Figure 2), move the quick-release wrench from the closed to the open position, and then loosen the nut until the wheel can be removed from the hook. During the process, you may have to tap the wheel tire down with your palm to detach it from the frame.

If your bicycle uses a thru-axle wheel system, please loosen the thru-axle rod with the knob (Figure 3, 4), pull it out and remove the thru-axle rod, and the wheel set can be separated from the frame.

To completely separate the rear wheel set from the frame, please pay attention to the cooperation between the flywheel, chain, and rear derailleur. You can pull the rear derailleur body (not the guide wheel and guide wheel plate) backward to make the rear wheel set smoothly detach from the frame.

④Install the rear wheel

Note: If your bicycle is equipped with a rear disc brake, please be careful not to damage the disc brake rotor, caliper, and brake pad splint by misalignment during installation. Please do not squeeze the brake lever until the disc brake rotor is installed in place.

First check and operate the transmission system so that the rear derailleur is released to the outermost position, which is the position of the smallest gear of the flywheel. If it is a quick-release wheel system, please first open the quick-release wrench and ensure that the rim brake caliper is released, then place the wheel set in the center of the rear fork of the frame, use your right hand to pull back the rear derailleur body (not the guide wheel and guide wheel plate), place the chain on the smallest flywheel sprocket, and ensure that the wheel axle is completely stuck into the frame hook.

Finally, refer to the first item in the wheel category above "Adjustment of quick-release wheels" to correctly adjust and tighten the wheels. If it is a thru-axle wheel system, you can directly place the wheel set in the center of the rear fork of the frame, use your right hand to pull back the main body of the rear derailleur (not the guide wheel and guide wheel plate), put the chain on the smallest flywheel sprocket, so that the axle is stuck in the frame hook, and finally insert the thru-axle rod. Refer to the second item of the wheel set above "Adjustment of the thru-axle wheel set" to correctly adjust and tighten the wheel set.

Afterwards, please close the rim brake brake release device and restore the distance between the brake pads and the rim. Rotate the wheel set to confirm that the wheel set is in the center of the frame when rotating, and check that the brake pads of the rim brake or disc brake are not in contact with the rim or disc brake rotor. Finally, try the brake operation to make sure the brake calipers are functioning properly.