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Old 04-19-2007, 10:30 AM
sammyd173 sammyd173 is offline
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Default Variator Nut Size?

What size is the nut to remove the variator and to remove the rear hub so I can change out the torque spring?

Secondly I have a small Sears air compressor. If I get an air wrench will this be enough to easily get the nuts off, or do I still have to figure out how to hold everything still with a strap wrench?

Thanks,

Sam
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Old 04-19-2007, 11:32 AM
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str8dum str8dum is offline
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17mm for the vario and clutch nut and 41mm to remove the torque spring. As long as that air wrench is an impact air wrench you'll be fine.
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2005 Zuma -- Polini Evo2, OKO PWK 28 Carb, Roost Racing Pipe, Polini Ignition, 16/40 gears, Malossi Overrange kit, Galfer 4 Piston Caliper, Hebo 12mm Crank , 13" Aerox Rims, blah blah, go fast. 51 mph here I come!
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Old 04-19-2007, 08:05 PM
jdsteeloh jdsteeloh is offline
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Quote:
Originally Posted by str8dum
17mm for the vario and clutch nut and 41mm to remove the torque spring. As long as that air wrench is an impact air wrench you'll be fine.
str8 are you sure its 17mm, i changed my belt today and i could of sworn it was a 15mm. and if you cant find a 41 mm at sears you can get the 1 5/8 at sears for 18.99. you dont need the impact wrench for the 41mm just use a regular old wrench. i do however use the impact for the crank case cover and the variator and clutch.
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Last edited by jdsteeloh; 04-19-2007 at 08:05 PM.
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Old 04-20-2007, 08:47 AM
Ndog1 Ndog1 is offline
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17mm is the size of the variator and clutch nut exterior (what size socket you will use), just as stated earlier.
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Old 04-20-2007, 08:54 AM
Ndog1 Ndog1 is offline
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Also, make sure you take it easy with that air wrench. Put it to its lowest setting if it is adjustable and hand tighten the nuts first. When you are using the impact, only go for a second or two and look at a marking on the socket to see how far you turned. It is not fun to strip the threads off your crank with an air gun. Be careful.

It takes a rather large adjustable wrench or huge socket so if you don't have one you can use a pipe wrench. To hold the torque driver use a wooden vice or your strap wrench. Just be careful not to bend or warp the components. Also dont get knocked out by the contra spring.

Ndog1
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Old 04-20-2007, 09:42 AM
sammyd173 sammyd173 is offline
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Great advice guys, I think this will save me a lot of headaches (and extra trips to Sears), thanks!
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Old 04-20-2007, 01:27 PM
jensen7up jensen7up is offline
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With Metric there are many sizes of thread spacing, 1.0, 1.25, 1.5mm. So when getting replacement nuts, make sure the thread is the correct size.

An example of this is the crankshaft and the clutch shaft are both 10mm, but if I remember right they both have different thread spacing. I believe the crank is 10.mm x 1.25mm and the clutch is 10mm x 1.0mm. Now the nut size it's self can also be different size for the same bolt size.

Most autoparts stores and Home Depot or Lowes have a good selection of Metric bolts and nuts.
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Old 04-20-2007, 10:23 PM
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str8dum str8dum is offline
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they are both 10x1 thread

hard to find as 10x1.25 is more standard. just order extras from yamaha.
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2005 Zuma -- Polini Evo2, OKO PWK 28 Carb, Roost Racing Pipe, Polini Ignition, 16/40 gears, Malossi Overrange kit, Galfer 4 Piston Caliper, Hebo 12mm Crank , 13" Aerox Rims, blah blah, go fast. 51 mph here I come!

Last edited by str8dum; 04-20-2007 at 10:24 PM.
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