P.c.v. System; Valve Clearance - Sym GTS 250 Service Manual

2. Maintenance Information

P.C.V. system

Draws out the plug from lower of the breather
chamber hose.
Releases the dry internal deposit.
Every 2,000 kilometers release oil
Caution
A In releases the anal fistula in the transparent
section as worthy of looking at as any deposit
 In the multi- rain or the accelerator in the
situation rides, must reduce the maintenance
traveling schedule
 In releases the anal fistula in the transparent
section as worthy of looking at as any deposit

Valve Clearance

Caution
Checks and adjustment must be performed
●
when the engine temperature is below 35℃.
Remove luggage box.
Remove cylinder head cover & side cover.
Remove ignition timing hole cap located in front
upper side of engine right cover
Turn camshaft bolt in C.W. direction and let the "T"
mark on the camshaft sprocket aligns with cylinder
head mark so that piston is placed at TDC position
in compression stroke.
Caution
Do not turn the bolt in C.C.W. direction to

prevent from camshaft bolt looseness.
Valve clearance inspection and adjustment:
Check & adjust valve clearance with feeler gauge.
Valve clearance (IN)：0.1±0.02 mm.
Valve clearance (EX)：0.15±0.02 mm.
Loosen fixing nut and turn the adjustment nut for
adjustment.
Caution
Re-check the valve clearance after tightened

the fixing nut.
Special tool: Tappet adjuster
SYM-9001200-08
SYM-9001200-09
SYM-9001200-10
Special tool: Tappet adjuster wrench
SYM-9001200
2-6
To this chapter contents
2 bolts
Breather chamber hose
Timing mark