The Tech Page


Jon Stoodley
Jon, a professional writer and tuner, has very kindly stepped up to the plate and answered a lot of trials questions.

 

 

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Jim Snell of TrialsPartsUSA
(Rising Sun Imports) has provided a wealth of information for this site. Jim has given us the official Gas Gas recomendations.

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For the latest Gas Gas manuals
(Enduro or Trials) check out:

Gas Gas Spain

 

Special Articles:

Changing older Pro crank seals to the newer (o4+) style

 

 

TIRE CHANGING TIPS - Jon Stoodley

Jim's Jetting Guidelines

Wiring Diagrams

The PRO Clutch

Recommendations

Spark Plug
NGKBP5RES, Champion RN11YC, Bosch Platinum WR9DP
Trans/Clutch Oil
Always 5W30 (Not 10W40), 350cc for the Pro, 650cc for other models, normal motor oil (Castrol/Penzoil etc). It is not recommended to use synthetic oil.
Gasoline
95 Octane minimum. No alcohol type blends. (Jim uses Sunoco purple 115 octane 20% to Shell unleaded premium 80%).
Premix
Between 80:1 and 100:1
Brake Fluid
DOT 4 is standard. DOT 5 is fine. (All higher numbers mix with lower numbers).