check engine YAMAHA TTR90 2006 User Guide

YAMAHA TTR90 2006 User Guide TTR90 2006 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/51685/w960_51685-0.png YAMAHA TTR90 2006 User Guide

Page 148 of 390

YAMAHA TTR90 2006 User Guide 3 - 9
INSP
ADJIDLE SPEED ADJUSTMENT/
VALVE CLEARANCE ADJUSTMENT
IDLE SPEED ADJUSTMENT
1. Start the engine and thoroughly warm it up.
2. Attach:
Inductive tachometer
To spark plug lead.
3. Adjust:
Id

Page 158 of 390

YAMAHA TTR90 2006 User Guide 3 - 14
INSP
ADJ
DRIVE CHAIN SLACK ADJUSTMENT
5. Install:
Drive chain 1 
Joint 2 
Master link clip 3
CAUTION:
Be sure to install the master link clip to the
direction as shown.
aTurning direction
Ne

Page 166 of 390

YAMAHA TTR90 2006 User Guide 3 - 18
INSP
ADJWHEEL INSPECTION/
STEERING HEAD INSPECTION AND ADJUSTMENT
EC36T000
WHEEL INSPECTION
1. Inspect:
Wheel runout
Elevate the wheel and turn it.
Abnormal runout → Replace.
2. Inspect:
Be

Page 176 of 390

YAMAHA TTR90 2006 User Guide 3 - 23
INSP
ADJ
ELECTRICAL/SPARK PLUG INSPECTION
EC370000
ELECTRICAL
EC371001
SPARK PLUG INSPECTION
1. Remove:
Spark plug
2. Inspect:
Electrode 1 
Wear/damage → Replace.
Insulator color 2 
Normal

Page 294 of 390

YAMAHA TTR90 2006 User Guide 4 - 50
ENGSHIFT FORK, SHIFT CAM AND TRANSMISSION
EC4H3000
REMOVAL POINTS
Shift fork, shift cam and transmission
1. Remove:
Shift forks
Shift cam
Drive axle assembly
Main axle assembly
NOTE:
Tap l

Page 342 of 390

YAMAHA TTR90 2006 User Guide –+ELEC
6 - 3
IGNITION SYSTEM
EC620000
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to
ignition system failure

Page 346 of 390

YAMAHA TTR90 2006 User Guide 6 - 4
–+ELECIGNITION SYSTEM
EC622001
SPARK GAP TEST
1. Disconnect the spark plug cap from spark
plug.
2. Connect the dynamic spark tester 1 (igni-
tion checker 2) as shown.
Spark plug cap 3 
Spark

Page 370 of 390

YAMAHA TTR90 2006 User Guide –+ELEC
6 - 15
CHARGING SYSTEM (TT-R90E)
EC680000
CHARGING SYSTEM (TT-R90E)
EC681001
INSPECTION STEPS
If the battery is not charged, use the following inspection steps.
*1 marked: Refer to “FUSE IN

Page 374 of 390

YAMAHA TTR90 2006 User Guide 6 - 16
–+ELECCHARGING SYSTEM (TT-R90E)
EC624000
COUPLERS AND LEADS CONNECTION 
INSPECTION
1. Check:
Couplers and leads connection
Rust/dust/looseness/short-circuit → 
Repair or replace.
CHARGING
Page:   < prev 1-10 11-20