Emergency....Yamaha 115 4 stroke. 2005 model

[joekiller]

Need to know the general compression parameters on this motor.....looking at one in am to buy, have a tester but don't know what numbers it should read?

[ohcrappie2]

I believe the min. is 135

[BigRiverMarine]

150 bare min. Make sure they are all the same. Every compression tester will vary a little just make sure the numbers are fairly even. 10-15% off on a cylinder would scare me. I don't have my service manual here at the house. Will check tomorrow. I've read several different numbers on the Internet and some say 205. 175+ should be good. Call me tomorrow for the RIGHT number.

[joekiller]

155# on 2 150# other 2. Thanks for the help.