Engine Idle Speed; Spark Plug - Linhai T-Boss 550 Service Manual

CHAPTER 3 ENGINE
Take out the feeler gauge, measure the clearance.
If the clearance is incorrect, repeat the above steps until
the proper clearance is obtained.
Locknut: 10 N•m
Caution:
Securely tighten the locknut after completing
adjustment
Install:
2 valve adjusting cover;
Inspection cap;
Recoil starter;
Cover plate;
Apply a small quantity of THREAD LOCKER to recoil
starter fixing bolts.
Tools:
Valve adjuster
Feeler gauge
Material:
Thread Locker

3.3.2.2 ENGINE IDLE SPEED

Inspect initially at 20 hours run-in and every 40
hours or 1000km thereafter.
Start the engine and warm it up for several minutes,
measure engine speed with a tachometer. Set the
engine idle speed between 1300~1500 r/min by turning
the throttle stop screw of carburetor.
Engine idle speed: 1400r/min±100r/min
Note:
Make this adjustment when the engine is hot
Tool: Tachometer

3.3.2.3 SPARK PLUG

Inspect initially at 20 hours run-in and every 80 hours or
2000km thereafter. Replace every 6000km.
Remove the spark plug with a special tool
Specification: DER7EA-9(NGK)
If the electrode is extremely worn or burnt, or spark plug
has a broken insulator, damaged thread, etc, replace the
spark plug with a new one.
T-Boss550 SERVICE MANUAL20.0
CHAPTER 3 ENGINE PAGE. 3- 25