| Brand Name | SeaSummer | SKU | 0017-Ex-1030690-17 |
| ID | 1" | Pulley | 7.200" |
| Rotation | CCW | Belt |
A/B Belt |
| Bolt Torque | 205 ft. lbs. | Maximum Engine RPM | 3,600 RPM |
| Voltage Insulation | 1000v | Temperature | Up to 370°F (188°C) |
| Net Weight | 5kg | Carton Dimensions | 68 x 46 x 26 cm |
| MOQ | 100pcs | Customized Services | OEM |
| Delivery Time | 30 days, volume-dependent | Packaging | Cardboard packaging |
Products Description

Lawn Mower Tractor PTO Clutch Exmark - 103-0690
Commercial mowers run on small parts that carry big responsibilities, and the blade clutch is first among them. This electric PTO clutch is engineered as a direct replacement for Exmark part number 103-0690, combining a strong electromagnetic coil with a friction assembly built for sustained, dependable engagement in professional mowing conditions. The unit reproduces the original Exmark mounting geometry and electrical connections, so the swap follows the standard procedure with no extra parts. Every batch is validated for coil and engagement performance prior to dispatch, and production is planned to keep this reference available for shops, dealers and equipment owners throughout the season.
Vehicle Compatibility
Applications
| Exmark | Lazer Z HP : serial no. 160,000 and up, Not for use with 27hp Model, use 109-8462 |
| Toro | Z Master Z400 sn 290000001 - 310999999 |
| Toro | Z Master Z441 sn 250000001 - 270999999 |
| Toro | Z Master Z449 sn 250000001 - 270999999 |
| Toro | Z Master Z450 sn 250000001 - 280999999 |
| Toro | Z Master Z453 sn 250000001 - 270999999 |
| Wright Stander | Sentar 3 - serial no. 26980 & Up |
Replacement Numbers
| Encore | 603078 |
| Exmark | 653048 |
| Exmark | 653292 |
| Exmark | 103-0690 |
| Exmark | 105-3630 |
| Exmark | 109-2916 |
| Exmark | 109-7036 |
| Exmark | 109-9276 |
| Exmark | 1-653048 |
| Exmark | 1-653292 |
| Exmark | E653048 |
| Exmark | E653292 |
| Lawn-Boy | 109-9276 |
| Toro | 653048 |
| Toro | 653292 |
Products Advantages
Why Choose Our Electric PTO Clutch over Generic Replacements?
Our Solution:

The Invisible Cost of OEM Pricing
Dealer-priced Exmark clutches carry a premium that shows up on the quote and stays with the customer - or quietly eats your margin if you absorb it. This replacement is built to the original's engagement and durability standards while carrying an aftermarket price, letting your estimate stay competitive, your customer stay happy, and your parts profit stay intact.
A Bad Fit Costs More Than the Part
Ordering by part number is supposed to remove the guesswork, but a clutch that arrives with off-spec surfaces turns a scheduled repair into a second call to the supplier, a return label and a mower that stays on the lift. Our 103-0690 is manufactured to the Exmark reference dimensions and verified across its critical interfaces, so the first fit is the only fit - and the bay moves on schedule.


When the Deck Loses Speed, the Lawn Tells Everyone
A fading clutch drops deck speed gradually - just enough to leave ragged edges and uneven stripes that customers notice before you do. Our coil and friction pack are designed to hold clamping force through heat and repeated cycles, keeping blade speed consistent from the first stripe to the last, so the work speaks well of you without a word being said.
Predictable Supply Keeps the Business Predictable
Service work can't be promised on parts you don't have. We maintain working stock on the 103-0690 through the season and run replenishment in regular cycles, so single-unit emergencies and planned fleet quantities both have a dependable timeline - with every shipment carrying functional test records from the batch.

Quality and Craftsmanship Details


Products Package

About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process








Quality control




Expo experience

Customer Reviews

FAQ
Q: How do I select the correct electric PTO clutch for my specific mower model?
A:To guarantee a 100% exact fit, you need to verify four critical mechanical dimensions:1. Shaft Bore Size: Common sizes are 1" (25.4 mm) or 1-1/8" (28.6 mm).2. Pulley Outer Diameter (OD) & Belt Width: Matches your deck's V-belt size (e.g., 1/2" or 5/8").3. Rotation Direction: Clockwise (CW) or Counter-Clockwise (CCW) when viewing from the pulley end.4. OEM Cross-Reference: Compare with original numbers (Warner, Ogura, John Deere, etc.).If you provide us with your engine model or original part number, our engineering team will cross-check our database and provide a 3D fitment drawing for confirmation.
Q: What measures are taken to prevent the coil from burning out during heavy-duty operation?
A: Our electric PTO clutches are built with Class H insulated copper wire, rated for temperatures up to 180°C (356°F). Combined with dual-sealed C3 high-speed bearings and dynamic balance calibration, our design reduces friction-induced heat, significantly lowering the risk of thermal coil failure under prolonged high-load conditions.
Q: What is your quality inspection protocol before shipment?
A:Every single clutch (100% full inspection, not random sampling) passes through our 4-step automated testing rig before packaging:
1. Coil Resistance & Amperage Test: Verifies electrical integrity.2. Static Torque Capacity Test: Ensures proper torque engagement under load.3. Air Gap Precision Check: Factory preset to optimal clearance (0.012" - 0.020") for immediate response.4. Dynamic Balance & Noise Level Test: Ensures vibration-free operation.
Q: Do you offer custom OEM/ODM development for specialized lawn equipment manufacturers?
A: Yes. We regularly partner with OEM machine builders and private-label brand owners. Our customization capabilities include:Custom Wiring Harnesses: Wire gauge, sleeve protection (corrugated/braided), and waterproof connector types (Deutsch, Molex, Amphenol).Custom Pulley Configurations: Single/double groove, specific ODs, and anti-corrosion plating.Branding & Packaging: Laser-etched logos/part numbers on the steel body, custom color box packaging, and barcoded master cartons.
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