Thanks everyone. Yeah I was scared because of the aluminum heads. Bought a Seloc brand manual which said it covers all 2 strokes from 90-00 but after finding which engines it ACTUALLY covers, mine is not included. Very misleading. Basically useless if you want a good service manual. And certainly no torque specs. I am not a mechanic by trade, but can figure stuff out fairly easily as long as it's not super complicated. On my vehicles, I've done pads/rotors, valve cover gaskets, valve adjustments, starter motor replacements, etc. Think I am going to download and print the manual off the web, the local Merc dealer said a manual specific to my engines (1998 150XL offshore 2 stroke, and 150CXL) would run me $100.Just remember you are screwing into cast aluminum. Don't over do it. When I was young and a naive youth, I ripped out a set of threads on a 10 HP Scott Attwater . Hasn't happened since and have had no problems. One of the considerations is whether you are installing a new plug or a used one that has had the gasket compressed. If new you have to keep the pressure on when you feel slight resistance (to compress the gasket) and be ready when the resistance takes a sharp rise....then is when I stop. Is it 20 ft-lbs? Don't know but been doing it for 50+ years and it works.
Thanks everyone. Yeah I was scared because of the aluminum heads. Bought a Seloc brand manual which said it covers all 2 strokes from 90-00 but after finding which engines it ACTUALLY covers, mine is not included. Very misleading. Basically useless if you want a good service manual. And certainly no torque specs. I am not a mechanic by trade, but can figure stuff out fairly easily as long as it's not super complicated. On my vehicles, I've done pads/rotors, valve cover gaskets, valve adjustments, starter motor replacements, etc. Think I am going to download and print the manual off the web, the local Merc dealer said a manual specific to my engines (1998 150XL offshore 2 stroke, and 150CXL) would run me $100.
Is it 20 ft-lbs? Don't know but been doing it for 50+ years and it works.
Yeah I think I'm going to buy it. I did find a manual online that seems to be the correct one:yeah, it is....
if ya gonna do your own stuff that 100 bucks will be tha best ya ever spent!.... i thought they was way over priced in '76 but found out "not so".....