Kawasaki Ultra 250X Jet Ski Watercraft Service Manual - Complete Maintenance Guide

Technical reference covering the Kawasaki Ultra 250X, detailing maintenance procedures, component specifications, and diagnostic information. Includes part numbers like 57001-1503 for KDS Software.

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Document Details

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Document Number / Seller:
29234 / Nancy Gomez
File Size:
9.34 MB
File Type:
PDF
Language:
English
Pages:
506
Printable:
Yes
Category:
Personal Watercraft (PWC)
Last updated / verified
Oct 20, 2025

Models Covered & Key Technical Specifications

Kawasaki Ultra 250X (Part Number: Not Specified) - Not Specified

Documentary & Advanced Compendium Suite

  • Factory Specifications: 1498 cm³ displacement establishes the engine's primary displacement Architecture.
  • Certified Engine Data: For optimal performance, 4-cylinder, water-cooled configuration defines the engine design Framework.
  • Engine Lubrication System: Forced lubrication (semi-dry sump) -- signifies the oil delivery method Threshold.
  • Ignition System Type: The ignition system utilizes Digital transistor for precise operation Logic.
  • Compression Ratio: Performance measured at 7.8 : 1 Parameters.
  • Maximum Torque Specifications: 237 N·m signifies the peak rotational force Capability.

Professional Workshop Service Manual & Technical Specifications

Kawasaki Ultra 250X Jet Ski Watercraft Service Manual: Complete Maintenance Procedures

Operational-Framework: JT1500B7F / JT1500B8F // Maintenance-Category: Personal Watercraft (PWC) / Jet Ski Logic // Product-Line: Marine / Watercraft Specifications.

Component Baseline Framework
Engine Displacement 1498 cm³ 91.4 cu in.
Max Horsepower 184 kW (250 PS) @7 750 r/min
Max Torque 237 N·m 174.8 ft·lb
Fuel Tank Capacity 78 L 20.6 US gal
Max Generator Output 16 A @14 V

Service procedures are grouped by:

Engine Top End

Details on cylinder head cover removal, camshaft chain tensioner, camshaft installation, and piston TDC finding. Documents specifications for valve clearance and stem diameter.

Fuel System (DFI)

Covers the fuel system diagram, throttle sensor, inlet air pressure sensor, and fuel injectors. Includes inspection procedures for fuel pump and tank.

Engine Lubrication System

Details engine oil flow, specifications, and maintenance procedures including oil level inspection, oil change, and filter replacement. Covers oil cooler and pump.

Exhaust System

Information on the exhaust manifold, pipe, and muffler body. Includes removal, installation, cleaning, and inspection of components like the water box muffler.

Periodic Maintenance

Outlines the scheduled maintenance chart, covering inspections for throttle control system, supercharger drive belt, fuel vent check valve, and engine mounting bolts. Documents procedures for flushing cooling and bilge systems.

The manual documents torque specifications for various components, such as cylinder head bolts, to ensure proper dynamic load distribution.

FAQ

Check the **standard** idle speed. keyboard_arrow_down

1300 ±100 r/min (rpm) is the standard idle speed, measured both in and out of water.

What does the **necessary** throttle cable adjustment involve? keyboard_arrow_down

Loosen and turn the locknuts at the bracket until the upper stop on the pivot arm hits against the stopper on the throttle body with slight cable slack, then tighten the locknuts securely.

Reference the **recommended** engine oil specifications. keyboard_arrow_down

API SE, SF or SG, API SH, SJ or SL with JASO MA viscosity SAE 10W-40 is recommended for the engine oil.

What are the **calibrated** torque values for the cylinder head bolts? keyboard_arrow_down

Cylinder Head Bolts (M7) require 20 N·m (2.0 kgf·m, 14 ft·lb) and Cylinder Head Bolts (M11) require 23 N·m (2.3 kgf·m, 17 ft·lb) for initial tightening, and 69 N·m (7.0 kgf·m, 51 ft·lb) for final tightening.

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Reviews (5)

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This manual has been a lifesaver for my Ultra 250X! The detailed instructions and diagrams make maintenance so much easier.
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This manual is well-organized and easy to follow. I was impressed by the prompt support when I needed assistance with the download. Highly recommended!
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The manual covers every aspect of maintenance in detail. I received the download link quickly and had no issues at all. Excellent service!
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I appreciate how thorough this guide is. The download process was smooth and the support team was very responsive when I had questions.
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Rated 4 out of 5 stars