Yamaha Crankcase Splitter

[Colin Jay]

I have recently measured up and produced a basic drawing of  the dimensions of a Yamaha Crankcase splitter for another forum that I frequent, and though that there would probably be a few people here who would be interested.

I have had the genuine item since I worked as a mechanic back in the 1980’s and I know it fits all the late 70’s and early 80’s 2 and 4 stroke engines with vertical split crankcases. i suspect that it probably suits all the Yamaha engines from the 1960’s all the way through to the latest models.



And a picture of the real thing so you have an idea of what the drawing is about.



The "bar" on the real splitter is made from forged steel, so I would recommend that the bar on any copy be made from 20mm mild steel as a minimum, or possibly even 25mm.

The two different length bolts, which are high tensile, come with the splitter as the different lengths are required for different engines.

CJ

[Hoony]

good stuff, i reckon this would fit most jap singles

[mick25]

hanks make a splitter like the one shown in the pic 4 the the SR XT TT5OO i got one , hes in qld 0740547144

[Lozza]

I got a Fragram (or something like that) brand of a splitter for about $40-50 from Tool Specialists. Thanks for posting the drawing looks a cinch to make.

[EVO450]

I made one these a couple of years ago out of 25mm tool steel (stronger than mild steel) I had trouble finding M8 bolts long enough and found that M8 high tensile all thread bar worked spot on. I used M16 all thread for the center bolt. I used it once and I lent to a mate who now, cant find it amongst the crap in his workshop. ............Lesson learnt.
Evo

[All Things 414]

Stanly still make great crank-case splitters.....

[misfit]

my father has a thing just like that which he aquired years ago when he worked at a suzuki dealer. they are pretty universal, i have used it on my z50, sl125, and ke175. its a great tool to have

[lukeb1961]

When I visited Le Canari in France, I found he had a handy little collection of tools...



number 1 :  crankcase separating  tool  for 175 ,250,400

number 2 :  for exhaust  spring  (  and for luke   it is perfect  for  third  spring  :-))

number 3:   for flywheel

number 4 :  for front fork 

number 5 :  for the clutch  pe 250 400

number 6:   for the clutch  pe 175

number 7 :  for  separating bearing  in the  crankcase 

number 8 :  conrod stopper pe 250 400

number 9 :  for removed  the  bearing lower of  front fork 

number 10 : for  separating  the number 54632-11020 on the front hub  , it is  the part  for  speedo  , sorry  I don t know  in English

number 11 : conrod stopper  pe 175