Mercury 3.5MH 3.5HP 15in Four Stroke Manual Tiller Outboard Motor

Description

Harness lightweight portable outboard power through the Mercury 3.5MH Four Stroke Outboard Motor to propel tenders and small canoes. The 85 cc single-cylinder four-stroke engine generates 3.5 brake horsepower at 6000 RPM. Overhead valve carburetion burns 0.3 gallons per hour at wide-open throttle, delivering exceptional portability with an integrated 0.3-gallon fuel tank on short-transom craft.

Cast aluminum alloy protects external housings against aggressive saltwater galvanic attack. The cylinder block houses parent-bore induction-hardened cast iron sleeves to minimize piston wear. Standard 15-inch short shaft housings fit small dinghy transoms. Dry package weight measures just 38 lbs. Sump volume holds 0.3 quarts of 10W-30 oil with gravity fuel flow.

Key Features of Mercury 3.5MH

Yacht tender skippers buy Mercury 3.5MH inboard engine alternatives to eliminate battery maintenance and external fuel tanks on small inflatable dinghies. The featherweight chassis pairs with manual recoil starting to get tender crews ashore without back strain.

• Integrated 0.3-gallon fuel tanks eliminate external hoses and tanks on small dinghy transoms
• Manual recoil pull starters provide dependable starting without complex electrical circuitry
• Standard 15-inch short shaft length matches standard inflatable dinghy and canoe transoms
• Mercury 3.5MH four-position manual tilt pins permit shallow-water operation across sand bars
• Featherweight engine mass of 38 pounds allows single-handed lifting from deck chocks to transoms
• Neutral and forward shifting mechanisms allow simple docking and motor warm-up routines
• 360-degree full pivot steering provides complete reverse thrust without mechanical reverse gears
• Integrated carry handles allow balanced one-person transport from vehicle trunks to piers

Combustion Dynamics Thermal Caps

Single-cylinder overhead valve induction produces 3.2 lb-ft of continuous torque across 3000 to 4500 RPM to push small displacement craft. Wax-pellet thermostats stabilize internal cooling water between 140°F and 160°F. Exhaust gasses exit through underwater ports, keeping sound decibels down and fuel burn near 280 g/kWh under continuous load.

Transom Cutout Installation Geometry

The 15-inch clamp bracket fastens straight onto standard 15-inch boat transoms meeting ABYC P-1 standards. Clearances demand 12 inches of splash well width to accommodate full 360-degree steering articulation. Heavy manual clamp screws lock the motor securely to transom boards.

Shift Protocols Operational Limits

Tiller twist grips provide positive throttle modulation and 360-degree pivot maneuvering when approaching docks. Cooling water tell-tale streams require visual confirmation upon starting. This small single-cylinder outboard is not engineered for heavy commercial displacement hulls, dry running, or operation exceeding 6000 RPM.

• Verify raw water tell-tale stream discharge each shift
• Inspect internal fuel tank filter screens every 50 hours
• Replace lower gearcase hypoid lubricant every 100 operating hours

Warranty Statement Shipping Inventory

Recreational customers receive a 3-Year factory warranty covering powerhead and gearcase mechanical assemblies. The heavy shipping carton holds the 15-inch portable outboard motor, spare pull rope, spark plug wrench, and complete technical owner manual.