Models · Kawasaki
Kawasaki Ultra 310LX
DemoPersonal Watercraft · 11–12 ft · 310 hp class · intermediate skipper · trailerable
High-power ski; impeller/wear-ring and hull stress watchpoints.
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Where the joy lives
High-power ski; impeller/wear-ring and hull stress watchpoints. Instant fun with almost no prep; neglect winterize or flush and the 'toy' becomes an expensive paperweight.
- performance PWC
- open water
Common watch-outs
- Impeller / wear ring damage from sand and debris
- Carbon buildup and poor winter storage corrosion
- Battery drain from accessories and short seasons
- Hull stress cracks near sponsons from beachings
- Intake grate clogging with weeds
- OEM service intervals missed due to low perceived hours
Safety notes
- Life jacket always; lanyard on every ride; no night operation.
- Give space to swimmers and anglers — jet wash and blind spots hurt people.
Crew (approx)
Day 2
Draft (approx ft)
0.8–1.8
Used band (demo)
$4,200–$9,800
Costs — yearly care snapshot
Demo estimateEducational snapshot so surprise spend doesn't steal boat days — not a quote, not the reason you're here.
Educational demo estimate from pwc · ~12 ft · jet-drive. Assumes 30 engine-hours/yr, trailer, sunbelt, 5-year hold. Boat day proxy = engine-hours ÷ 4. Not a quote, appraisal, or underwriting offer. Low absolute dollars but high per-hour service if neglected. Storage, trailer, and winterize still apply. OEM dealer service recommended for warranty years. High-power ski; impelle
Annual mid
$2,325
5-yr total mid
$14,425
$/good day hint
$385
Assumes 30 h/yr · trailer · sunbelt · 5-year hold. Range $1,668 – $3,147/yr.
Maintenance rhythm (clear the deck)
Engine oil and filter
~50h / ~12 mo · PWCs often hit calendar before hours.
Jet pump / wear ring inspection
~50h / ~12 mo · Sand and debris accelerate wear.
Flush cooling system after salt/silt
· After every salt or muddy outing.
Battery and bilge drain check
~3 mo · Store dry; remove battery in freeze climates.
Hull / ride plate fasteners
~12 mo · Vibration loosens hardware.
Winterize / fog / antifreeze per OEM
~12 mo · Mandatory in freeze belt.
Boat Day survey intel
Educational overlayAdditive survey priors from the Boat Day failure corpus — not a marine survey. Prefer a credentialed surveyor before purchase.
- jet
- safety
Extra common issues
- Impeller damage
- Battery corrosion
- Sponson gelcoat hits
Survey focus
- Pump/impeller
- Compression/hours
- Safety lanyard
Campaign / bulletin diligence
- Educational: PWC pump and electrical.
- Educational: beachings and intake clogs drive most PWC surprises.
Top findings for pwc
- Impeller damage / wear ringhigh · high
- Battery and electrical corrosionhigh · medium
- Hull gelcoat / sponson damage from beachingshigh · medium
- Intake grate clogging history (overheat)medium · high
- Safety lanyard / kill switch defectsmedium · critical
Corpus: /api/v1/datasets/survey-failures · Pre-purchase checklist · Find them online · surveyors
Cost & survey cues
Low absolute dollars but high per-hour service if neglected. Storage, trailer, and winterize still apply. OEM dealer service recommended for warranty years. High-power ski; impeller/wear-ring and hull stress watchpoints.
Survey focus
- Compression / leakdown and service history
- Jet pump wear ring and impeller
- Hull cracks and ride-plate fasteners
- Battery and electrical accessories
- Trailer or dock storage condition
- OEM recall / campaign status
Waterways: sw-floridalake-michigan
Clear next steps
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Specs, years, and HP ranges are approximate educational demo data — not OEM specifications. Verify with manufacturer literature, a qualified marine surveyor, and current listings before purchase or service decisions.