Stump-Jumper 14hp 420cc Complete Mud Motor


Out of stock


Due to Covid-19, prices of material needed to build our mud motors continue to fluctuate and many of our mud motors and frame kits are being built-to-order.  For accurate pricing and current lead times, please fill out the form found on our Contact Us page and we will get back to you as soon as possible.  Please include as many details as possible of what you are looking for.  Once information is confirmed, a custom quote will be generated for you.  Price ranges are included below for reference but are estimates and may change depending on current material prices.

  • 14hp Complete Mud Motor: $1,750-$1,950
  • 7hp Complete Mud Motor: $1,295-$1,495
  • 14hp Frame Kit: $1,195-$1,395
  • 7hp Frame Kit:  $1,125-$1,325
NEW 2017 – 14 Hp Stump-Jumper Mud Motor

Powered by Predator engine with electric start and recoil backup.

Lightweight mud motor – only 101 lbs dry weight.

At Bill’s Engineering we’re all about getting you to places others can’t and the lightweight Stump-Jumper Mud Motor does just that.

Shipping included to the lower 48 states! A 5.5% sales tax applies to Wisconsin residents.

Some assembly required. Engine is prepped ready for install.

SAVE $25 by paying with personal check or money order, send to Bill’s address on the contact page.

Our mud motors come with a twist grip throttle by standard.  If you would like a finger lever throttle, attach an “Instruction to merchant” when checking out.

Please Contact us Here for AK, HI, and International orders.

Category: Tags: , , , , Product ID: 1259


Stump-Jumper Features

  • Drive shaft housing DOM tubing
  • Heavy Duty Tubular Frame support Construction ™ 1999 yr
  • Ultra-Reliable Direct Drive ™  (the engine takes ZERO thrust unlike competitors)
  • Hollow drive shaft TM 2001 yr., reduces weight by 5 lbs. Stronger then a solid shafts. Hollow driveshafts are used in all rear wheel drive vehicle.
  • Bearing Nut TM. 1999 yr. Part of the lower bearing system.  Does 3 things: 1. Acts as a stop nut for the propeller.    2. Keeps the seals in spec. (propeller are put out of balance when weeds collect on propeller).  3. And prevents driveshaft from bending, when takes an impacted from hitting object in the water  ( frame assembly absorbs impact load from propeller) Takes stress away from drive shaft.
  • Propeller 8×4 15-5 Stainless Steel. Propeller (Hill Marine)
  • Low-Maintenance Sealed Bearing
  • Tiller Handle Multi-Position Patent Pending
  • Quick-Release Transom Mount ™ ( Stump-Jumper can be removed from your boat in seconds)
  • Twist Grip Throttle standard. Finger lever throttle available (Instructions to merchant) when checking out.
  • Safety Lanyard Marine grade
  • Overall length is  inches (tiller handle in transport position or handle removed)
  • Drive Shaft ″
  • Overall weight is 101 lbs (Engine: 73 lbs; Frame: 28 lbs.)
Predator 13 Hp electric start with pull start backup

This Predator 420cc gasoline engine has gas-saving overhead valves for cooler, cleaner performance and longer life. The horizontal shaft is ball-bearing mounted, making this gas engine an ideal replacement for most standard engine configurations. The powerful gas engine features a durable cast iron cylinder making it the perfect replacement engine for a lawn mower, log-splitter and dozens of other machines.

  • Upgraded engineering and construction for improved lifespan
  • Durable cast iron cylinder withstands wear and abuse
  • User-friendly controls for easy starting and operation
  • Fuel shut off for safe transport