Here's a repost of a method I used quite successfully. There's no dangerous chemicals to spill; a consideration for me since I: a) live on a lake, and b) drink from a well. There's also no ball bearings or nuts to recover afterwards. You need a 10 amp battery charger, duct tape, a box of salt, water, a funnel, a piece of steel rod, electrical tape, methyl hydrate and light oil. I adapted it from a technique used by antique outboard restorers:
Submitted by xjcdadmin on Wed, 10/14/2009 - 22:38INSTALLATION
1. Install carburetors: Reverse the removal steps.
Yeah, right...
Maxim X Carburetor Installation
A Technique for reinstalling old hardened intake boots. (Note: This will probably not work on other models with long boots)
This is not a Yamaha procedure. It was developed by Joe D. HAP and dv
Submitted by xjcdadmin on Wed, 06/10/2009 - 13:02LUBRICATION SYSTEM
The turbo unit is pressure-lubricated from the main engine oil gallery. A check valve is installed on the outlet o' the engine main oil gallery to stop oil flow to the turbo unit when the engine is not running. A scavenging pump rotor is equipped behind the original oil pump rotor to retrieve the oil from the turbo unit, ensuring a constant flow of oil.
Check valve opening pressure: 24.5 kPa (0.25 kg/cm , 3.56 psi)
Submitted by xjcdadmin on Thu, 06/04/2009 - 17:47