Yamaha SR250G Service Manual page 38

2. Crankshaft Soecifictions
Vnitr fin!
Defact on coleranse Fiywheat wicen | — oasioorsies
i Sere Axial Side 6
ftside "1" | Rignesioe 2 F New Man, Mu "
Gos or sess~su00 | us~10 | 20 03 085
00072) (ovora) | 12.327 ~ 2223) |oos~ 004] wos iociis) | (0.0268)
3. In disassembling and reassembling the
rank, follow she illustrated below,
sO: S——
Mako sure ail passages of crark and crank
bin are lined up during assembly
+ Crank meenbly 2. Saaxpa
Oi! Pump
1, Trochoid pump rotor wicsh
Dalivery pump. 12 mm (0.47 in)
2. Rotor dimensions-inner and outer
Clearance between A and 3 standad,
003~ 005mm
(0.0012 ~ 0.0035 int
347
{weve 2 Omri 3 Merch works
Primary Drive
Thy diive gear is mounted on the crankshaft
'and the driven gear is integral with Tae clutch
assembly ané mounted on the transmission
main shaft.
1 Check the drive gaor and driven gear for
'obvious signs of wear or damage from
foreign material within the primary case
If primary drive gears exhibit excessive
noise during operalion, eeat las!) may
be incorrect
Numbers ara scribed on tha side cf o2ch
geat. Add these oumbers, |* their total
exceed tolerance, replace with
numbered gear that will bring tatal
within specification.
note: ——________—_______-
This procedure is rarely required. However, if
2 gear must be replaced due to damace, it is
always advisable <o pay strict attention ta
Ue fash nunbers during replacement,