2007 Yamaha YFM35FGIW Grizzly 350 Service Manual (374 P.)

Complete troubleshooting and removal sequences for engine, transmission, differential, and 4WD systems. Covers valve adjustment, brake service, and shift mechanism repair with torque specifications.

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Document Details

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Document Number / Seller:
24089 / George Garcia
File Size:
38.87 MB
File Type:
PDF
Language:
English
Pages:
374
Printable:
Yes
Category:
ATV
Last updated / verified
Dec 27, 2025

Models Covered & Key Technical Specifications

Yamaha YFM35FGIW Grizzly 350 4WD IRS — 2007 Procedural Engineering Handbook | Grizzly 350 Series Section.

  • Calibrated Displacement Data: 348 cm³ (21.2 cu in) is specified as the engine cylinder volume Requirements.
  • Measured Compression Ratio: The engine specifications indicate 9.2:1 for standard combustion chamber pressure Threshold.
  • Engineered Compression Pressure: Standard compression pressure reaches 1,050 kPa (10.5 kg/cm², 149.3 psi) at 750 r/min Mapping.
  • Verified Tank Capacity: The fuel tank requires 13.5 L (2.97 Imp gal, 3.57 US gal) for operational parameters Configuration.
  • Designated Power Output: Engine displacement measures 83.0 mm bore × 64.5 mm (3.27 × 2.54 in) stroke Benchmarks.
  • Integral Weight Rating: Basic weight capacity is established at 275.0 kg (606 lb) with oil and full fuel tank Range.

Professional Workshop Service Manual & Technical Specifications

Unified Field Installation Manual: Yamaha YFM35FGIW Grizzly 350 4WD/IRS ATV Service Resource Index

Technical-Scope: Yamaha YFM35FGIW (2007) 4WD/IRS models // Reference-Category: ATV engine and transmission systems / Shaft drive assembly Logic // Operational-Scope: Complete factory documentation with wiring diagrams, electrical circuit specifications, and component reference data.

Specification Baseline Calibration-Standards
Document Structure 381 pages, 46 identified chapters Complete manufacturer specifications provided
Engine Type Air-cooled 4-stroke SOHC, 348 cm³ Compression data and valve clearance reference documented
Drivetrain Configuration V-belt primary, shaft drive final, 4WD/differential lock capable Torque specifications and gear lash reference data included
Electrical System DC CDI ignition, AC magneto generator, 12V starting Complete wiring diagram and circuit specifications
Suspension & Chassis Double-wishbone front/rear, coil spring dampers, wet disc/multi-disc brakes Adjustment specification data for all suspension components

Repair data is categorized into comprehensive system breakdowns: engine mechanical assembly covering cylinder head alignment and camshaft positioning, carburetor configuration and fuel management, transmission and clutch operation specifications, drive train constant velocity joint documentation, final drive gear positioning and lash adjustment procedures, chassis suspension and brake system architecture, and complete electrical system circuit logic including ignition, charging, starting, lighting, and signaling subsystems.

Wiring diagrams are provided for ignition system operation, electric starting circuit architecture, charging system configuration, lighting circuit layout, signaling system design, cooling fan motor relay operation, and 2WD/4WD selector logic. Fuel system procedures are documented for carburetor float height measurement and fuel level positioning. Adjustment procedures are detailed for valve clearance settings, idle speed control, throttle lever free play, front and rear brake engagement points, shock absorber spring preload, wheel alignment toe-in measurement, and differential gear lash clearance. Timing procedures are documented for camshaft sprocket alignment and crankshaft positioning during assembly operations. Technical notes are provided for oil filter replacement intervals, lubricant specifications by application point, battery charging methodology using both constant voltage and variable current techniques, and switch continuity testing procedures.

The manual documents torque specifications for the engine including cylinder head fastener sequences, crankcase assembly bolts, camshaft sprocket fastening, timing chain tensioner cap retention, and oil pump housing attachment. Chassis tightening specifications encompass engine mounting brackets, frame-to-engine attachment points, front brake caliper assembly, wheel hub axle nuts, steering stem bearing retainer, differential gear case mounting, and final gear assembly bolts, each referencing specific fastener sizes and graduated tightening sequences to ensure proper clamp load consistency.

Special tools are catalogued with part numbers and applications, including rotor holding tools for magneto work, crankcase separation devices, valve guide removal and installation implements, compression testing equipment, timing light assemblies, ball joint service attachments, gear lash measurement instruments, and sheave spring compressors for clutch service operations. Circuit diagrams detail the complete electrical architecture including power distribution through main and auxiliary fuses, relay control logic for starter motor engagement, charging voltage regulation, headlight relay switching, four-wheel-drive motor control, cooling fan activation based on oil temperature sensing, and indicator light illumination sequences for neutral, reverse, 2WD/4WD mode status, and oil temperature warning functions.

Troubleshooting flowcharts address ignition system failures through ignition spark gap measurement, spark plug cap resistance verification, ignition coil primary and secondary winding testing, and pickup coil resistance confirmation. Starting system diagnosis encompasses battery condition assessment, starter motor operation verification, starter relay continuity checking, main and engine stop switch validation, and neutral/brake interlock confirmation. Drive train troubleshooting covers bearing condition assessment through noise characterization, oil contamination evaluation, and drained oil analysis for metal particulate evidence. Transmission operation assessment includes shift fork engagement smoothness, transmission gear tooth inspection, and clutch shoe wear limit confirmation against friction plate thickness specification data.

FAQ

Identify the **correct** spark plug specification for this ATV model? keyboard_arrow_down

DR8EA manufactured by NGK is the standard spark plug required for this 2007 Yamaha YFM35FGIW. The proper spark plug gap should be maintained between 0.6 to 0.7 mm (0.024 to 0.028 inches) to ensure optimal engine performance and ignition reliability.

What **documented** procedures should be followed for adjusting the idle speed? keyboard_arrow_down

1,450 to 1,550 r/min is the specification for engine idle speed adjustment. The throttle stop screw must be turned in direction "a" to increase idle speed or direction "b" to decrease it while monitoring with a digital tachometer until the specified range is achieved.

Determine the **precise** tool requirement for removing the rocker arm shaft? keyboard_arrow_down

90890-01083 (Slide hammer bolt 6 mm) or model YU-01083-1 is required as the special tool for rocker arm shaft removal. This tool must be used with the weight assembly (90890-01084 or YU-01083-3) to safely extract the shaft without damage to critical engine components.

What **proper** electrical specifications define the CDI unit ignition timing? keyboard_arrow_down

10° before top dead center (B.T.D.C.) at 1,500 r/min with digital advancement is the ignition timing specification for this model. The F8T40380 MITSUBISHI CDI unit maintains this timing through the digital advance system to optimize combustion across varying engine speeds and operating conditions.

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Reviews (2)

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New
I found this service manual incredibly helpful for maintaining my YFM350. The diagrams are clear, making repairs a lot easier. Plus, when I had a question, customer support responded quickly and was very professional. Worth every penny!
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New
This manual was a lifesaver for my Grizzly! The troubleshooting section is very detailed, and I was able to fix issues quickly. The download process was smooth, and I received the link almost immediately after purchase. Highly recommend!