How to replace crank seals on Yamaha ct1-175?
Replace Yamaha 2 stroke crank seals – Chin on the Tank – Motorcycle stuff in Philadelphia. Since a lot of friends have been getting 70’s and 80’s Yamaha 2 stroke dirt bikes, and I’ve done this a couple times now on my CT1-175 due to the motor blowing up, I figured I’d do a basic write up on how to change the crank seals.
What’s the easiest way to trobleshoot for bad crank seal?
The clutch side has a shoulder that will require you to either use wraps of foil to allow the seals to side on the crank without popping the spring, on or a crank sleeve tool. ok, here we go……… Number one, Lakeside is correct on all accounts.
What happens to the crank seals on a 2 stroke dirt bike?
On 2 stroke dirt bikes, there is a rubber seal on either side of the crankshaft. Over time these dry out. The seal on the magneto side (left side) prevents air from getting into the combustion chamber. If the seal on this side goes bad, you’ll get air leaks. Your idle will hang and/or the bike will rev erratic randomly.
Where are the crank seals on a Yamaha?
The seal on the clutch side (right side) prevents crankcase oil from getting into the combustion chamber. If the seal on this side goes bad, you’ll burn a ton of oil and eventually foul plugs and suck the crankcase dry of oil. Ok. Use OEM yamaha seals. Get them from BikeBandit.com Bolt will be a 19mm.
Replace Yamaha 2 stroke crank seals – Chin on the Tank – Motorcycle stuff in Philadelphia. Since a lot of friends have been getting 70’s and 80’s Yamaha 2 stroke dirt bikes, and I’ve done this a couple times now on my CT1-175 due to the motor blowing up, I figured I’d do a basic write up on how to change the crank seals.
On 2 stroke dirt bikes, there is a rubber seal on either side of the crankshaft. Over time these dry out. The seal on the magneto side (left side) prevents air from getting into the combustion chamber. If the seal on this side goes bad, you’ll get air leaks. Your idle will hang and/or the bike will rev erratic randomly.
The clutch side has a shoulder that will require you to either use wraps of foil to allow the seals to side on the crank without popping the spring, on or a crank sleeve tool. ok, here we go……… Number one, Lakeside is correct on all accounts.
What happens when the crank seal on a Yamaha goes bad?
Your idle will hang and/or the bike will rev erratic randomly. Bike will run lean and trying to tune it will be pointless. The seal on the clutch side (right side) prevents crankcase oil from getting into the combustion chamber. If the seal on this side goes bad, you’ll burn a ton of oil and eventually foul plugs and suck the crankcase dry of oil.