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MAINTENANCE SPECIFICATIONS

SPEC

P7

Model		YSR50T
Air Filter:
Oil Grade		Foam-Air-Filter oil or Yamalube "2"
Carburetor:
I.D. Mark		2AL 01
Main Jet	(M.J.)	#120
Air Jet	(A.J.)	02.5
Jet Needle-Position	(J.N.)	3G21-4
Needle Jet	(N.J.)	E-0
Cutaway	(C.A.)	2.0
Pilot Outlet	(P.O.)	<t> 0.9
Pilot Jet	(P.J.)	#17.5
Air Screw	(A.S.)	1-1/8
Valve Seat Size	(V.S.)	01.5
Starter Jet	(G.S.)	#20
Fuel Level	(F.L.)	0 - 1 mm (0 — 0.04 in)
Float Height	(F.H.)	21-23 mm (0.83-0.91 in)
Idling Speed		1,300- 1,400 r/min
Reed Valve:
Valve Thickness		0.15 mm (0.006 in)
Valve Stopper Height		6.7-7.3 mm (0.26-0.29 in)
Valve Bending Limit		0.3 mm (0.012 in)
Lubrication System:
Autolube Pump
Color Codę		Green
Minimum Stroke		0.20-0.25 mm (0.008-0.010 in)
Maximum Stroke		1.85-2.05 mm (0.073-0.081 in)
Minimum Output		0.50 - 0.63 cm^3 per 200 strokes
Maximum Output		4.64-5.15 cm^3 per 200 strokes
Pulley Adjusting Mark		At idle

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