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OS.18CV-RMX, PS Marine Engine


This is the O.S. Max .18CV-RMX Marine Engine with Pull-Start.
** Two Year Limited Warranty **

Ideal upgrade from .15 cu in (2.4cc) engines used in
Ready-To-Run boat models.

FEATURES: Recoil Starter
Rotary type carburetor (11J OSMG3817) with 6.5mm bore
Water cooled
Side exhaust
Delivers 11% more power than a .15 size engine and has the same
mounting dimensions

INCLUDES: O.S. Max .18 CV-RM Marine Engine with Pull-Starter, #8 Glow Plug
Carburetor, instruction manual

REQUIRES: Fuel: O.S. suggests 10 to 30% nitro. However, they suggest starting
with 20% nitro and changing to a higher or lower nitro content
if required. Fuel should also contain 18% lubricant.

SPECS: Displacement: 0.18 cu in (3.0cc)
Bore: 0.63″ (16.0mm)
Stroke: 0.59″ (15mm)
Practical RPM Range: 3000-32,000
Power Output: 1.35 PS, 1.33 HP/28,000 RPM
Weight: 8.21oz (232.6g)

Distance between mounting holes same side: 0.43″ (11mm)
Distance between mounting holes opposite side: 1.2″ (31.4mm)
Width of crankcase not including mounting flanges: 1″ (25.6mm)
Width including mounting flanges: 1.5″ (39mm)
Width including rear adapter (back plate): 1.6″ (40mm)
Height bottom of crankcase to top of cylinder head: 2.6″ (66mm)
Height bottom of mounting flanges/top of cylinder head: 2″ (50.5mm)
Length from backplate to end of crankshaft: 2.7″ (68mm)
Length from rear of recoil to end of crankshaft: 3.4″ (87.8mm)
Length from cylinder centerline to front of drive washer: 1.6″ (41mm)
Length form rear of recoil to front of drive washer: 2.9″ (74.8mm)
Exhuast port mounting hole centers: 1.1″ (27.5mm)
Distance from crankshaft centerline to top of head: 2″ (50.5mm)
Distance/crankshaft centerline to exhaust centerline: 0.98″ (25mm)
Crankshaft Threads: 5mmx0.8 pitch