Yamaha RX10H Owner's Manual page 61

Standard main jet:
# 135
CD-04E
Main jet 1
Small No.
Large No.
1. Loosen the carburetor clamps and remove all hoses
and cables, and then remove the carburetor.
2. Pinch the fuel hose to prevent fuel flowing.
3. Remove the float chamber and install the proper
main jet.
4. Assemble by reversing the removal steps.
WARNING
@
Make sure that all hoses and clamps are properly
installed.
@
8-9
Mixture
Lean
Rich
Condition
Warm weather
High altitude
Cold weather
Low altitude