Yamaha 30D - Page 44

2-6
SPEC
E
MAINTENANCE SPECIFICATIONS
REED VALVE
Stopper plate height mm (in) 2.65 ± 0.15 (0.10 ± 0.006)
Warpage limit mm (in) 0.2 (0.01)
THERMOSTAT
Valve opening temperature ˚C (˚F) 48 ~ 52 (118 ~ 126)
Full-open temperature ˚C (˚F) 60 (140)
Valve lift mm (in) 3 (0.12)
CARBURETOR
ID mark 6K901/6K911 6J801/6J811
Valve seat size mm (in) 1.1 (0.04) 1.1 (0.04)
Main jet # 96 102
Main nozzle mm (in) 2.3 (0.09) 2.3 (0.09)
Main air jet # #1,2: 140
#3: 150
#1,2: 140
#3: 150
Pilot jet # 54 50
Pilot air jet # #1,2: 120
#3: 140
#1,2: 100
#3: 120
Pilot screw Turns out 3/4 ± 1/4 #1: 3/4 ± 1/4
#2: 1-3/4 ± 1/4
#3: 1 ± 1/4
Float height mm (in) 16 ± 0.5
(0.63 ± 0.02)
15 ± 0.5
(0.59 ± 0.02)
Idle speed r/min 750 ± 50
1,050 ± 50 (PTT models)
Trolling speed r/min 650 ± 50
800 ± 50 (PTT models)
Item Unit
Model(s)
25hp 30hp