odometer YAMAHA YFM350R 2013 Owners Manual
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for long distances. The transmission is prop-
erly lubricated only when the engine is run-
ning. Inadequate lubrication may damage
the transmission.
●Always use the clutch when changing gears.
The engine, transmission and drive train are
not designed to withstand the shock of
forced shifting and can be damaged by shift-
ing without using the clutch.EBU20672Engine break-in TIP●For ATVs equipped with an odometer or an hour
meter, follow the figures given in km (mi) or the
figures given in hours.●For ATVs not equipped with an odometer or
hour meter, follow the figures given in hours.There is never a more important period in the life of
your engine than the first 320 km (200 mi) or 20
hours of riding. For this reason, you should read
the following material carefully.
Since the engine is brand new, do not put an ex-
cessive load on it for the first 320 km (200 mi) or 20
hours. The various parts in the engine wear and polish themselves to the correct operating clear-
ances. During this period, prolonged full-throttle
operation or any condition that might result in en-
gine overheating must be avoided.
0–160 km (0–100 mi) or 0–10 hours
Avoid prolonged operation above 1/2 throttle. Vary
the speed of the ATV regularly. Do not operate it at
one set throttle position.
160–320 km (100–200 mi) or 10–20 hours
Avoid prolonged operation above 3/4 throttle. Rev
the engine through the gears freely, but do not use
full throttle at any time.
320 km (200 mi) or 20 hours and beyond
The ATV can now be operated normally.
NOTICEECB00220If any engine trouble should occur during the
engine break-in period, immediately have a
Yamaha dealer check the ATV.
U1BS63E0.book  Page 6  Tuesday, March 13, 2012  11:43 AM 
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EBU21743Periodic maintenance chart for the emission control system TIP●For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.●For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should be followed.●Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.NO.ITEM CHECK OR MAINTENANCE 
JOB INITIAL
EVERY
Whichev- er comes  first month136612
km 
(mi) 320 
(200) 1300 
(800) 2500 
(1600) 2500 
(1600) 5000 
(3200)
hours 20 80 160 160 320
1 *Fuel line  Check fuel hoses for cracks or other damage, and 
replace if necessary. √√√
2 Spark plug  Check condition and clean, regap, or replace if 
necessary. √√√√√
3 *Valves  Check valve clearance and adjust if necessary. √ √√√
4 *Carburetor  Check starter (choke) operation and correct if nec-
essary.
 Check engine idling speed and adjust if neces- sary. √√√√
5 *Crankcase breather 
system  Check breather hose for cracks or other damage, 
and replace if necessary. √√√
U1BS63E0.book  Page 3  Tuesday, March 13, 2012  11:43 AM 
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EBU21865General maintenance and lubrication chart TIP●For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals.●For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter-
vals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance
intervals should be followed.●Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.NO.ITEM CHECK OR MAINTENANCE 
JOB INITIAL
EVERY
Whichev- er comes  first month136612
km 
(mi) 320 
(200) 1300 
(800) 2500 
(1600) 2500 
(1600) 5000 
(3200)
hours 20 80 160 160 320
1 Air filter element  Clean and replace if necessary. Every 20–40 hours (more often in wet or 
dusty areas)
2 *Clutch  Check operation and adjust if necessary. √ √√√
3 *Front brake  Check operation and correct if necessary.
 Check fluid level and ATV for fluid leakage, and 
correct if necessary. √√√√√
 Replace brake pads. Whenever worn to the limit
4 *Rear brake  Check operation and correct if necessary.
 Check fluid level and ATV for fluid leakage, and 
correct if necessary. √√√√√
 Replace brake pads. Whenever worn to the limit
U1BS63E0.book  Page 5  Tuesday, March 13, 2012  11:43 AM