Models 300 300 Pro 350 350 Pro
Kilowatts 221 221 261 261
Full throttle RPM range 5800–6400
Idle RPM in neutral gear* 550 600
Number of cylinders 6
Displacement 2,598 cc (158.5 cid)
Cylinder bore 82 mm (3.23 in.)
Stroke 82 mm (3.23 in.)
Spark plug NGK ILFR6G‑E
Spark plug gap 0.8 mm (0.0315 in.)
Spark plug hex size 16 mm
Gear
Ratio
1 inch shaft 1.85:1 1.75:1
1.25 inch shaft 1.75:1 1.75:1 1.75:1
Recommended gasoline
Refer to Fuel and Oil
Recommended oil
Refer to Fuel and Oil
Gearcase capacity
Refer to Maintenance ‑ Gearcase
Lubrication
Engine oil capacity with oil
filter replacement
7.0 Liter (7.4 US qt)
Required battery type 12‑volt AGM (absorbed glass mat) battery
USA (SAE) battery type
800 minimum marine cranking amps (MCA)
with a minimum reserve capacity of 135
minutes RC25 rating
International (EN) battery
type
975 minimum cold cranking amps (CCA) with
a minimum of 65 amp hours (Ah)
* Engine at normal operation temperature.
GENERAL INFORMATION
34 eng