Direct-fit BETA 62T repower and diesel service for Volvo 110S/120S and Yanmar SD20 saildrives—mobile support across the Central Coast.

BETA 62T at a Glance — Specs You Provided
- Rated power: 46.2 kW / 62 hp @ 2,800 rpm
- Aspiration: Turbocharged
- Cylinders: 4
- Displacement: 2,434 cc (≈149 in3)
- Dry weight: ≈291 kg (≈642 lbs)
- Transmission: ZF 25M (Standard)
- Alternator: 70 Amp (12 V) standard
Emissions: EPA Tier III compliant for recreational or commercial use (must be ordered correctly at purchase; use cannot be changed after shipment).
Direct-Fit Repower for Common Saildrives
The BETA 62T is an ideal repower for yachts originally equipped with Volvo 110S/120S or Yanmar SD20 legs. With Beta’s shallow sump and special feet options, many installations become bolt-in projects, eliminating extensive fabrication and minimizing downtime. The result: a quieter cabin, smoother operation, and a major reliability upgrade—without the cost and complexity of replacing the saildrive leg.
Standard Specifications & Features
- Cooling: Heat exchanger with header tank and water-cooled exhaust manifold for temperature stability and quiet running.
- Pumps: Fresh- and seawater pumps with injection bend for a wet exhaust.
- Fuel system: Mechanical fuel lift pump with filtration; clean delivery for smooth starts and efficient combustion.
- Drivability: Flywheel housing and heavy inertia ring for very smooth low-RPM operation.
- Noise reduction: Special quiet air intake filter for comfortable passages.
- Charging: 70A, 12V alternator supports house loads and starting bank.
Operator Control — “C Deluxe” Panel
- Tachometer with hour meter, key start, push-button stop
- Green “power on” light; red warning lights and audible alarms (oil pressure, engine temp, alternator charge)
- 3m interconnection cable with multi-pin connector
Shallow Sump Options for Tight Engine Bays
For vessels with limited clearance between engine, bearers, and hull, Beta offers a shallow sump package. This changes the sump pan shape and repositions the sump pump connection to reduce height while retaining proper dipstick calibration.
Because total oil volume is slightly reduced, oil-change intervals are shorter: perform an initial change at 50 hours, then change oil every 150 hours or annually (whichever comes first). This keeps lubrication robust despite the smaller sump volume.
Recommended Maintenance Intervals — Central Coast Use
- Engine oil & filter (standard sump): ~250 hours or annually; shallow sump: initial 50 hours, then every 150 hours or annually.
- Fuel filters: replace per schedule; carry spares for Channel Islands trips and post-storm refuels.
- Cooling system: inspect impeller each season; maintain coolant concentration; clean heat exchanger to prevent scale.
- Air intake: inspect/replace filter as needed to maintain clean boost and reduce smoke.
- Belts & charging: verify 70A alternator output and belt tension/track.
- ZF 25M transmission: fluid checks and shift-cable geometry verification to ensure smooth engagement.
Early Warning Signs Your BETA 62T Needs Attention
Hard Starts or Hesitation
Often tied to fuel restriction, air ingress, weak batteries, or alternator belt slip.
Excessive Smoke
Blue = oil; white = cold/unburned fuel; black = fuel/air imbalance or overload. We diagnose the root cause first.
High Temperatures
Check for blocked intakes, tired impellers, exchanger scaling, or incorrect coolant mix.
New Vibrations
May indicate misalignment, aging mounts, or driveline geometry issues; we locate and correct the source.
Where We Work — Local, Mobile & Diesel-Only
- Santa Barbara: Yacht clubs, marinas, and coastal cruisers.
- Ventura Harbor: Recreational fleets and working boats.
- Oxnard: Fishing vessels, cruising yachts, and charters.
- Channel Islands Harbor: Liveaboards and charter operators who need fast, reliable dockside service.
We come to you whenever feasible—slip, mooring, or yard—so you avoid tow and haul logistics. Clean, professional, and photo-documented work is our standard.

Why Central Coast Captains Choose 805 Marine Mechanic
- Inboard diesel specialists: We service marine diesels only—no gasoline or outboards.
- Direct-fit repower expertise: Volvo/Yanmar saildrive conversions and BETA replacements, done right.
- Transparent estimates: Clear options, realistic parts timelines, and accurate completion targets.
- Root-cause repairs: We solve underlying issues to minimize repeat visits and downtime.
- Clean, professional work: Tidy bilges, labeled systems, and photo documentation every step of the way.
Helpful Resources
Frequently Asked Questions
Can the BETA 62T bolt to my existing Volvo 110S/120S or Yanmar SD20?
In many cases, yes. With shallow sump and special feet, the 62T is designed for direct-fit installations to reduce fabrication and downtime.
What’s the oil change interval with a shallow sump?
Initial oil change at 50 hours, then every 150 hours or annually (whichever comes first). Standard sump intervals are typically longer.
Do you service areas beyond Santa Barbara and Ventura?
We primarily cover Santa Barbara, Ventura, Oxnard, and Channel Islands Harbor. Ask about availability outside these areas.
Do you work on engines other than Beta?
Yes—inboard marine diesel only. We do not service gasoline or outboard engines.