(1) Reed valve; (2) Air filter; (3) Orifice; (4) Carburetor joint (near cylinder); [A] To the front cylinder head; [B] To the rear cylinder head; [C] To the orifice; [D] To the carburetor joint (rear cylinder); [E] To the AIS valve
1. Inspect:
- hose connections. Poor connections → Properly connect.
- hoses
- reed valves
- air cut-off valve
- air filter
Cracks/damage → Replace.
Clogged → Clean.
Note: The orifice (3) should be installed with the arrow mark facing the AIS valve side.