Reference Information
Service Specifications
13
1
HP 200 225 250 250 H.O. 300
Fuel / Oil System
Fuel/Oil Ratio
EMM Controlled
Starting Enrichment
EMM Controlled
Preferred Fuel Regular unleaded gasoline
Acceptable Fuel
Use unleaded regular gasoline. The use of unleaded gasoline containing alcohol
above the percentage specified by government regulations is not recommended. Do
NOT use Fuel labeled "E85." Use of fuel labeled E15 is prohibited by U.S. EPA Reg-
ulations.
Minimum Octane 87 AKI (R+M)/2 or 90 RON
Fuel Pressure
(minimum) – Lift Pump
–High Pressure Pump
6 psi (41 kPa) @ idle
26 to 32 psi (179 to 220 kPa) @ 5500
Fuel Pressure
(maximum) – Lift Pump
–High Pressure Pump
3 psi (21 kPa) @ 5500 RPM
34 to 40 psi (234 to 275 kPa) @ idle RPM
Maximum Fuel Inlet Vacuum 4 in. Hg. (13.5 kPa)
Fuel Filters – Inline
– Water Separating
P/N 357797
P/N 502906
Fuel Additives
2+4 Fuel Conditioner, Fuel System Cleaner.
Use of other additives may result in engine damage.
Electrical System
Minimum Battery Requirements
675 CCA (845 MCA); or 750 CCA (940 MCA) below 32°F (0°C) (Use a 107 amp-hr
battery for extreme applications.)
Alternator
Dual Voltage 50 Amp with Voltage Regulator and Battery Isolation.
Refer to Predelivery and Installation Guide for multiple battery applications.
Analog Tachometer Setting 6 pulse (12 pole)
Charging Isolator Integral, Terminal on Engine Harness
Engine Fuses
3 Amp MINIFUSE, P/N 3011805, 5 Amp MINIFUSE, P/N 514764,
10 Amp MINIFUSE, P/N 514766, 30 Amp MINIFUSE, P/N 3011729
Engine Relays – Starter
– B+ to 55 V System
12V 35A SPDT, P/N 3011790
12V 35A SPDT, P/N 3011790
Cooling System
Thermostat 143°F (62°C)
Maximum Temperature 203°F (95°C)
Water pressure – Idle
– @ 5500 RPM
5 to 8 psi (34 to 55 kPa)
> 25 psi (>172 kPa)
Pressure Relief Valve (open) 28 psi (193 kPa) (approximate)
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