Yamaha SRX 120 2017 Page 16 Operator'S Manual Download

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Before removing the spark plug, be sure

to clean the area around the spark plug. If

you do not, dirt could enter engine when

removing or installing the spark plug.
Adjust the gap to specified amount (see

specifications chart) for proper ignition.

Use a feeler gauge to check the gap.

ATV0052B

When installing the spark plug, be sure to

tighten it securely. A new spark plug

should be tightened 1/2 turn once the

washer contacts the cylinder head. A

used spark plug should be tightened 1/8 -

1/4 turn once the washer contacts the cyl-

inder head.

Brake

Yamaha recommends that the complete

brake system be checked daily for wear

or damage and for smooth operation.

Periodically, the brake band should be

inspected for cracks and to ensure the

liner is intact and not worn excessively.

Replace the brake band if cracked or

worn excessively.

Checking Brake Lever

Travel

1. Compress the brake lever fully.
2. Check the distance between the

brake lever and the lever stop. The

distance must be within the specified

range of 6-13 mm (1/4-1/2 in.).

0725-565

3. If travel distance is not as specified,

adjust the brake.

Adjusting Brake Lever

Travel

To adjust the brake lever travel, use the

following procedure:

1. Remove the drive chain shield.
2. Loosen the rearward brake cable jam

nut; then tighten the forward jam nut

to set up the brake.

0735-457

3. Check the brake lever travel distance

periodically while tightening the for-

ward jam nut. When the distance is

within the specified range of 6-13 mm

(1/4-1/2 in.), tighten the rearward jam

nut to secure the adjustment.

Drive Chain

The drive chain should be lubricated every

10 operating hours with Yamaha Synthetic

Chain Lube. By using the recommended

chain lube or a dry, graphite-based chain

lubricant, dirt buildup on the drive chain

will be minimized. Before each lubrica-

tion, inspect the drive chain for dirt accu-

mulation.
To lubricate the drive chain, shut the engine

off and wait for all moving parts to stop,

remove the drive chain shield, and lubricate

the drive chain. After lubricating the drive

chain, install the drive chain shield.

! WARNING

DO NOT operate the snowmobile

when any component in the brake

system is damaged, worn, or

adjusted improperly.

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Summary of Contents for SRX 120 2017

Page 1: ...2 2017 017 OPERATOR S MANUAL OPERATOR S MANUAL SRX 120 SRX 120 www yamaha motor com 8JM F8199 74 8JM F8199 74 LIT 12628 03 37 LIT 12628 03 37 Downloaded from ManualsNet com search engine ...

Page 2: ...Downloaded from ManualsNet com search engine ...

Page 3: ...ment 18 Ski Wear Bar 18 Rail Wear Strips 19 Recoil Starter Air Vents 19 Lights 19 Preparation for Storage 21 Preparation after Storage 22 Snowmobile Safety Rules 23 Consumer Information 24 Reference Information Write the appropriate information for your Yamaha Snowmobile in the spaces below Always use these numbers when referring to your snowmobile Model ___________________________________________...

Page 4: ...afety Handbook and snowmobile decals dis play the words Warning Caution and Note to emphasize important information The symbol WARNING identifies personal safety related information Be sure to follow the directive because it deals with the possibility of severe personal injury or even death A CAUTION identifies unsafe practices which may result in snow mobile related damage Follow the directive be...

Page 5: ...ark Plug Gap 0 7 0 8 mm 0 028 0 031 in Ignition Timing Fixed 24 BTDC 3600 RPM CARBURETOR Type Mikuni BV18 11 84Z1 CHASSIS Overall Length 181 6 cm 71 5 in Overall Height 78 7 cm 31 in Overall Width 87 6 cm 34 5 in Ski Center to Center Distance Stance 78 cm 31 in MISCELLANY Gasoline Recommended 87 Minimum Octane Regular Unleaded Gas Tank Capacity Actual 1 7 L 0 46 U S gal Gas Tank Capacity Rated 1 5...

Page 6: ...located on the top right hand side of the con sole The tether cord MUST BE clipped to the operator s right wrist before attempting to start the engine Second you must check several things every time before the engine is started A Make sure the brake lever works properly moves freely by pulling squeezing the brake lever and releasing it several times B Make sure the throttle lever works properly mo...

Page 7: ...hard packed snow etc B Always sit on the seat and keep both feet on the running boards when operating the snowmobile Do not get off the snowmobile until it has come to a complete stop C Never drive the snowmobile faster than a safe speed Do not drive too close to roads buildings trees other snowmobiles or people Never show off D Never operate the snowmobile unless the headlight and taillight are i...

Page 8: ... a four cycle engine therefore it is unnecessary to premix gasoline and oil Recommended Gasoline The recommended gasoline to use in this snowmobile is 87 minimum octane regu lar unleaded Oxygenated gasolines are acceptable gasolines Do not use gaso lines containing methanol NOTE If not satisfied with gaso line economy of the engine when using a gas alcohol blend switch to unleaded gasoline without...

Page 9: ...engine During break in a maximum of 1 2 throttle is recommended however brief full throttle accelerations and variations in driving speeds contribute to good engine break in After the 10 hour break in period the snowmobile may be taken to an authorized Yamaha Snowmobile dealer for a checkup and oil change This service is at the discretion and expense of the snowmobile owner Muffler The muffler is ...

Page 10: ...position and the tether cap is connected to the tether switch 4 For a cold engine pull the choke out completely If the engine is warm choking is not normally necessary 5 Pull the recoil starter handle slowly until resistance is felt then give a short quick pull The engine should start however if the engine does not start repeat this step 6 When the engine starts push the choke approximately half w...

Page 11: ...from the tether switch NOTE Unless the engine will be started within a short period of time close the gas tank shut off valve located under the gas tank by rotat ing the valve clockwise CAUTION If the snowmobile is not to be used for an extended period of time be sure to close the gas tank shut off valve Downloaded from ManualsNet com search engine ...

Page 12: ...Hours 2 weeks Every 20 Hours 1 month Every 50 Hours 3 months Every 100 Hours 6 months Every 300 Hours 12 months Valve Clearance IA Engine Compression I Spark Plug I Fuel Supply Hose I R Replace every 3 years Gas Tank Shut Off Valve I IC Carburetor Float Chamber I C Engine Oil I R R Nuts Screws Cap Screws I T Rear Suspension IL Recoil Starter I I IC IL Air Filter I C Carburetor IC Pilot Air Screw I...

Page 13: ...l level stick into the crankcase then rotate the stick clockwise until snug 5 Close the hood and secure with the two straps Changing To change the engine oil use the follow ing procedure NOTE The front of the snowmo bile must be elevated until the engine is in a level position when changing the oil 0744 920 1 Remove the access plug then place a drain pan beneath the engine 2 Release the two hold d...

Page 14: ... the adjustment range to obtain smooth low speed performance Throttle Cable The correct throttle cable adjustment is when with the engine OFF the carbure tor throttle is completely open against its limit while the throttle lever lightly con tacts the handlebar grip The throttle arm on the carburetor should also contact the speed control screw when the throttle lever is released To adjust the throt...

Page 15: ...ry filter in a plastic bag then pour in recommended air filter oil and work the oil into the filter 5 Clean any debris from inside the air cleaner Be sure no debris enters the carburetor 6 Place the filter into the housing 7 Place the air cleaner cover onto the housing then secure with the two screws Spark Plug This snowmobile comes equipped with a specified spark plug See the specifications chart...

Page 16: ...13 mm 1 4 1 2 in 0725 565 3 If travel distance is not as specified adjust the brake Adjusting Brake Lever Travel To adjust the brake lever travel use the following procedure 1 Remove the drive chain shield 2 Loosen the rearward brake cable jam nut then tighten the forward jam nut to set up the brake 0735 457 3 Check the brake lever travel distance periodically while tightening the for ward jam nut...

Page 17: ...related there fore always check both even if only one adjustment seems necessary Track tension is directly related to the overall performance of the snowmobile If the track is too loose it may slap against the tunnel causing wear or it may ratchet on the track drive sprockets Yamaha recommends that the track ten sion be checked once a month and adjusted accordingly Checking Track Tension 1 Remove ...

Page 18: ...rom the track track drive sprockets and the inside of the skid frame 2 Position the tips of the skis against a wall then using a shielded safety stand raise the rear of the snowmo bile off the floor making sure the track is free to rotate 3 Start the engine and accelerate slightly Use only enough throttle to turn the track several revolutions SHUT ENGINE OFF NOTE Allow the track to coast to a stop...

Page 19: ...provides the stiffest ride and position 1 is for the light driver or slow speed trail riding Position 2 is for the average operator under normal condi tions Always rotate the cam from the lighter position to the heavier position 0744 946 Using a 13 16 in wrench rotate the cam until it is in the desired position To stiffen the ride rotate the cam so as to raise the spring end Make the adjustment on...

Page 20: ...ht ahead If the skis are not pointing straight ahead adjust using the following procedure NOTE The following procedure can be used to adjust the alignment of either ski 1 Determine which ski is out of align ment then unlock the adjustment tie rod by loosening the jam nuts 0735 446 2 Adjust the ski alignment by rotating the adjustment tie rod 3 When steering alignment is correct apply blue Loctite ...

Page 21: ...n lock nuts securely Rail Wear Strips Yamaha recommends that the wear strips be checked weekly and replaced as nec essary NOTE The rail wear strips will wear rapidly if the snowmobile is operated on terrain on which the snow cover is minimal Loose snow is required to cool and lubricate the wear strips and prevent accelerated wear Recoil Starter Air Vents It is important for proper engine cooling t...

Page 22: ...adlight aim can be adjusted to pro vide maximum illumination for the oper ator To adjust headlight aim adjust the four headlight adjustment screws until maximum illumination for the operator is apparent CAUTION Do not touch the glass portion of the bulb If the glass portion is touched it must be cleaned with a dry cloth before installing Downloaded from ManualsNet com search engine ...

Page 23: ...lowly about five times C Install the spark plug and con nect the high tension wire 6 Remove the drive chain and clean thoroughly in a solvent Install drive chain and lubricate with a dry graphite based chain lubricant 7 Change the oil then clean the air fil ter 8 Lubricate the spindles and the rear suspension with an all temperature grease 9 Tighten all screws nuts and cap screws securely 10 Make ...

Page 24: ...r rotating parts 4 Inspect the drive chain and drive chain tightener Replace if neces sary 5 Lubricate the drive chain with rec ommended lube or with a dry graphite based chain lubricant 6 If not done during preparation for storage lubricate the spindles and the rear suspension with an all tem perature grease 7 Check brake lever travel distance all controls ski alignment track ten sion track align...

Page 25: ...23 Snowmobile Safety Rules Downloaded from ManualsNet com search engine ...

Page 26: ...maha dealer 2 Competition racing or non Yamaha authorized rental use 3 Operation on surfaces other than snow or ice 4 Installation of parts or accessories that are not qualitatively equivalent to genuine Yamaha parts 5 Abnormal strain neglect or abuse 6 Lack of proper maintenance 7 Accident or collision damage 8 Modification to original parts SPECIFIC EXCLUSIONS from this warranty shall include pa...

Page 27: ...w Yamaha snowmobiles purchased between May 1 and November 30 will have the warranty extended to November 30 of the following year WARRANTY QUESTIONS AND ANSWERS Q What costs are my responsibility during the warranty period A The customer s responsibility includes all costs of normal mainte nance services non warranty repairs accident and collision damages as well as oil spark plugs clutch drive be...

Page 28: ...warranty first contact the owner of the dealership Since all warranty matters are handled at the dealer level this person is in the best position to help you If you are still not satisfied and require additional assis tance please write U S A CUSTOMERS YAMAHA MOTOR CORPORATION U S A CUSTOMER RELATIONS DEPART MENT P O Box 6555 Cypress California 90630 CANADIAN CUSTOMERS YAMAHA MOTOR CANADA LTD CUST...

Page 29: ...27 YAMAHA EXTENDED SERVICE Y E S FOR U S A CUSTOMERS Downloaded from ManualsNet com search engine ...

Page 30: ...ery authorized Yamaha dealer nationwide You can purchase years of our Yamaha Protection Plus coverage for a fraction of what a single major repair could cost you With Yamaha Protection Plus Yamaha is ready to step in to make any needed repairs excluding those repairs due to normal wear or aging using genuine parts and factory authorized service for the full dura tion of your coverage For further i...

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