Mercury MerCruiser D1.7L DTI Diesel Engine Service Manual, 2000–2008 (P/N 90-863016)

Mercury Marine Service Manual No. 29, P/N 90-863016, March 2001 edition, covers Mercury MerCruiser D1.7L DTI diesel engines in MCM sterndrive installations, serial number 0M055001 and above. Transom assembly and sterndrive unit repair require the separate Sterndrive Service Manual.

Searchable PDF and Wiring Diagram Detail

Text search and diagram access: Searchable text is embedded throughout the manual. There are no embedded PDF bookmarks. Small connector labels and wire codes in the denser wiring diagrams are readable when enlarged.

One printable English-language PDF with 537 pages, including 13 pages of front matter and 40 intentionally blank factory pages.

Diesel Engine Repair, Injection Timing and Marine Systems

The following highlights are a selection of the covered work, rather than a complete contents list. Additional topics include engine break-in and tachometer calibration.

• Engine repair: Cylinder-head disassembly, piston and connecting-rod service, crankshaft and bearing inspection, oil-pump overhaul, and front and rear oil-seal replacement.

• Valve and belt timing: Step-by-step procedures for timing-belt replacement, camshaft installation, valve-clearance inspection, and shim adjustment.

• Fuel system: Water-separating filter service, injector testing and replacement, fuel-system bleeding, and Bosch VE-L injection-pump removal, installation, and timing adjustment.

• Electrical diagnosis: Starter voltage-drop and solenoid tests, on-engine alternator checks, optional glow-plug controller diagnosis, and instrument and sender testing.

• Closed cooling: Heat-exchanger disassembly, water-circulating-pump replacement, thermostat testing, coolant filling, and seawater-system maintenance.

• Intake and exhaust: Intercooler cleaning and pressure testing, exhaust-manifold/heat-exchanger leak checks, turbocharger inspection, and wastegate boost testing.

• Power steering: Pump and pulley replacement, hose routing, fluid-cooler service, and filling and air-bleeding procedures for equipped installations.

Mercury Marine wrote this manual for dealers, mechanics, and service personnel already trained in servicing these or similar products, including the use of special marine tools.

Maintenance and Engine Installation

The maintenance schedules and related service sections let a workshop match routine service, seasonal layup, and recommissioning work to the engine’s factory requirements. Coverage distinguishes seawater draining from closed-cooling-system protection and includes corrosion protection and intercooler condensate draining.

Engine installation procedures address coupler alignment, remote-control shift and throttle cables, and operational checks. The tool list identifies Quicksilver alignment tool 91-805475A1, while the shift-cable section distinguishes right-hand and left-hand sterndrive rotation.

Internal Engine Inspection and Reassembly

Cylinder-head work includes injector-sleeve replacement, piston-protrusion-based head-gasket selection, and multi-stage head-bolt tightening sequences. Piston and cylinder-bore grades and color-coded bearing selection tables support component matching during rebuilds.

The crankshaft inspection section explains that its nitride-treated surfaces cannot be reground. Machining those surfaces would compromise the treatment that provides crankshaft strength.

Injection Pump Timing and Service Limits

The Bosch VE-L distributor pump has a manifold-pressure boost compensator. Its timing section separates belt timing from dial-indicator checks and identifies dial indicator 91-58222A1 and metric adapter 91-801333510.

Internal fuel-system service: The manual directs injection-pump and injector repair to an authorized Bosch Service Center and does not recommend injector disassembly. It describes injector opening-pressure and spray-pattern testing with the EFEP60H nozzle tester.

Injector-removal cautions explain how coolant can pass the injector-sleeve O-rings into a combustion chamber and cause severe engine damage. Water-in-fuel warning flowcharts distinguish probe, lamp, and wiring faults when diagnosing an indicator that stays on or fails to illuminate.

Electrical Tests and Circuit References

Instrumentation coverage distinguishes basic and optional panels from the Quicksilver instrumentation package. Connector terminal and wire-color tables accompany the wiring, with separate checks for gauges, senders, audio warnings, and neutral-start circuits.

The Engine Wiring, Glow Plug Circuit Diagram, and Alternator Circuit Diagram support circuit tracing alongside the component tests. Charging-system diagnosis covers output, AC ripple, and wiring resistance with the alternator installed on the engine.

Cooling, Exhaust and Turbocharger Details

The Cooling System Flow Diagram separates seawater and closed-coolant circuits; the Lubrication Flow Diagram traces oil supply through the engine and turbocharger. The Fuel Flow Diagram shows supply and return routing around the filter and injection pump.

The exhaust manifold is incorporated into the heat-exchanger assembly. Turbocharger coverage extends to minor disassembly, turbine inspection, and boost-pressure diagnosis; further power-steering testing and repair are referred to the separate sterndrive manual.

Working on marine diesel systems involves high pressures and heavy moving parts. Always use proper protective equipment and follow standard workshop safety practices when referencing these factory diagnostic procedures.

Valve-Clearance and Fluid-Capacity Examples

Cold-engine valve-clearance data give nominal settings of 0.40 mm intake and 0.50 mm exhaust, alongside inspection ranges and shim-thickness calculations.

Capacity tables list approximately 8.75 liters of engine coolant. The approximate 1892 mL drive-oil capacity applies specifically to the Alpha drive equipped with a drive lube monitor.